Thank you very much i apologize for lack of info ,the many layers of army green hides many things. I was looking on a cdn site that showed pictures of the trucks and it appears to be a 56 gmc .The only thing is its supposed to have a gas engine & ours has a big inline diesel 6 in it but i think this was a transplant at some time in its past because there is another set of motor mounts under the hood . The beast has 4 single rear drive tires not duals and it has 6 wheel drive which is kool . I am sorry for lack of more info but i,m giving you the best i can . Thanks fellas later bake